首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The world’ s environment is surprisingly healthy. Discuss. If there were an examination topic, most students would tear it apart
The world’ s environment is surprisingly healthy. Discuss. If there were an examination topic, most students would tear it apart
admin
2018-07-30
75
问题
The world’ s environment is surprisingly healthy. Discuss. If there were an examination topic, most students would tear it apart, offering a long list of complaints from local smog(烟雾)to global climate change, from the felling(砍伐)of forests to the extinction of species. The list would largely be accurate, the concern legitimate. 【T1】
Yet the students who should be given the highest marks would actually be those who agreed with the statement.
The surprise is how good things are, not how bad.
After all, the world’ s population has more than tripled during this century, and world output has risen hugely, so you would expect the earth itself to have been affected. Indeed, if people lived, consumed and produced things in the same way as they did in 1900(or 1950, or indeed 1980), the world by now would be a pretty disgusting place, smelly, dirty, toxic and dangerous. But they don’ t. 【T2】
The reasons why they don’ t, and why the environment has not been ruined, have to do with prices, technological innovation, social change and government regulation in response to popular pressure.
That is why today’ s environmental problems in the poor countries ought, in principle, to be solvable. Raw materials have not run out, and show no sign of doing so. Logically, one day they must; the planet is a finite place. Yet it is also very big, and man is very ingenious. 【T3】
What has happened is that every time a material seems to be running short, the price has risen and, in response, people have looked for new sources of supply, tried to find ways to use less of the material, or looked for a new substitute.
For this reason prices for energy and for minerals have fallen in real terms during the century. The same is true for food. 【T4】
Prices fluctuate, in response to harvests, natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available.
But they always do, assisted by new farming and crop technology. The long term trend has been downwards.
【T5】
It is where prices and markets do not operate properly that this benign(良性的)trend begins to stumble, and the genuine problems arise.
Markets cannot always keep the environment healthy. If no one owns the resource concerned, no one has an interest in conserving it or fostering it: fish is the best example of this.
【T3】
选项
答案
发生的情况是:每次当一种材料似乎要耗尽,价格就上升,与之相应,人们寻找新的供给能源,试图找到更少消耗这种材料的方法,或者寻找新的替代品。
解析
本句是由what引导的主语从句,表示“发生的情况是…”,substitute意指替代品。
转载请注明原文地址:https://kaotiyun.com/show/2vRd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
WriterKennethDavissaysAmericanhistoryisfullofadventureandsurprises.TheauthorofthebookDon’tKnowMuchaboutHist
Inademocraticsocietycitizensareencouragedtoformtheirownopinionsoncandidatesforpublicoffices,taxes,constitution
AccordingtothelatestresearchintheUnitedStatesofAmerica,menandwomentalksuchdifferentlanguagesthatitislikepe
WhatisCanonDigitalPowerShotS230camera’ssize?
Inhowmanyweeksarethestudents’researchpapersdueaccordingtotheteacher?
Thetangohasprobablytraveledfurtherandgonethroughmorechangesthanalmost【21】______.Africanslavesbroughtthetan
Thetangohasprobablytraveledfurtherandgonethroughmorechangesthanalmost【21】______.Africanslavesbroughtthetan
EversinceALGoreinventedit,theInternethasbeenaparadiseforthosewithacreativeattitudetofacts.Students,forexam
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrelationships.Oneoftheleastunderstoodinvolvesthe
Whatistheoccasionfortheman’sspeech?
随机试题
行车中遇到后方车辆要求超车时,应________。
A起自足背静脉弓B经外踝前方上行C无静脉瓣D注入胫后静脉E注入髂外静脉小隐静脉
休克的治疗原则包括
A.胺类激素B.肽类激素C.蛋白质激素D.类同醇激素血管升压素是
属于颅后窝的孔裂是
与企业甲签订的运输合同,应缴纳的印花税为( )元。与个人了签订房屋出租合同,应缴纳的印花税为( )元。
在试算平衡表上,虽然实现了期初余额、本期发生额和期末余额三栏的衡等关系,但仍然。不能保证账户记录是完全正确的。()
平行四边形:长方形:正方形
桉树由于受昆虫和真菌的侵害生长速度缓慢,因而成为一种优质木材。19世纪桉树被引进美国,失去了昆虫和真菌的危害,加之适宜的水土环境,生长速度极快,因而成为易开裂和弯曲的废材。桉树从优质木材变成废材说明了()。
华氏度和摄氏度均是测量温度的单位,摄氏度规定水的冰点温度为0度,沸水温度为100度;华氏度规定水的冰点为32度,沸点为212度。某时刻华氏度比摄氏度数值上高60度,则该时刻为:
最新回复
(
0
)